Classifications

• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K5/00—Use of organic ingredients
  • C08K5/04—Oxygen-containing compounds
  • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
  • C08L83/04—Polysiloxanes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
  • C08J7/12—Chemical modification
  • C08J7/16—Chemical modification with polymerisable compounds
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K11/00—Use of ingredients of unknown constitution, e.g. undefined reaction products
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
  • C09J183/04—Polysiloxanes
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
  • C08G77/04—Polysiloxanes
  • C08G77/12—Polysiloxanes containing silicon bound to hydrogen
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
  • C08G77/04—Polysiloxanes
  • C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
  • C08G77/04—Polysiloxanes
  • C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/31504—Composite [nonstructural laminate]
  • Y10T428/31652—Of asbestos
  • Y10T428/31663—As siloxane, silicone or silane

Definitions

• the present invention relates to addition-crosslinked
• Silicone compositions ⁇ S) are produced, a process for preparing the addition-crosslinking
• Suitable substrate materials are, for example, metals, glasses, ceramics, organic polymers or biological materials.
• silicones or crosslinkable silicone compounds play an increasing role as substrate materials. In these, however, a durable composite is difficult to achieve due to their abhesive nature.
• Substrate material to improve the adhesion between the silicone and the substrate material.
• An exemplary process provides the pretreatment of the surface of the substrate materials with UV irradiation, Flaming, corona or plasma treatment.
• pretreatment steps the surface or
• near-surface layer of the substrate materials is activated, i. It creates functional, predominantly polar groups, which allow the formation of a connection and thus contribute to the realization of a durable composite material.
• primers Another way of producing durable solid silicone composites is the application of primers, called primers, to the substrate material.
• primers contain besides adhesion-promoting
• EP0501882 for example, a composite material of a silicone elastomer and an organic plastic is disclosed
• EP0143994 describes the provision of an organohydrogenpolysiloxane-containing organic
• addition-crosslinking silicone composition also enables the production of a durable solid composite material.
• the procedure just described requires a structural modification of at least one of the substrates, whereby the physical and chemical properties can be adversely affected. It is also a chemical
• Adhesion promoters These additives added to the uncrosslinked silicone compositions cause during or after the
• Vulcanization ⁇ possibly after storage - one
• Adhesion build-up with a substrate material Adhesion build-up with a substrate material.
• EP0875536 describes a self-adhesive
• Silicone rubber composition containing at least one
• Substrate surface is deteriorated. Furthermore, it is preferred to use methoxysilanes which release the methanol classified as toxic. With the release of volatile fission products ⁇ alcohol elimination) is also a significant shrinkage of the silicone elastomer
• EP1106662 describes self-adhesive addition-crosslinking
• organohydrogenpolysiloxane acts both as adhesion promoter and as crosslinker. Those described in EP1106622
• compositions have the disadvantage that the specified additives cause on the one hand due to their relatively high reactivity accelerated SiH degradation and also the crosslinking rate is lowered
• EP1510553 discloses self-adhesive addition-curing
• Organohydrogenpolysiloxane (C) an adhesion-promoting compound of the general formula (R 12 ) s Ph-X r -Ph (R 12 ) 5 and as additional Haftverraittler (D) containing at least one terminal SiH group-bearing organopolysiloxane.
• these compositions have the disadvantage that Si-H-terminated polymers, which are often used for chain extension, have a negative impact on the processing quality in the
• EP0601883 describes self-adhesive addition-curing
• Siloxane group as a primer containing at least one aromatic group and at least one SiH function
• EP0686671A2 describes a pressure-sensitive addition-curing silicone composition which does not use special adhesion promoters, since the adhesion-promoting constituent is either an organohydrogenpolysiloxane having on average per molecule at least two SiH groups and the latter
• Molecule has at least one SiH group and which contains a group consisting of two aromatic rings, wherein the two aromatic rings by -R 13 R 14 Si, -R 13 R 14 SiO-, - OR 13 R 14 SiO- or -R 13 R 14 SiOR 13 R 14 Si are separated from each other and the radicals R 13 and R 14 monovalent hydrocarbon radicals represent.
• the adhesion-promoting constituent may therefore at the same time be the crosslinker of the silicone elastomer composition.
• Composition will have good adhesion to organic
• ABS acrylonitrile-butadiene-styrene copolymer
• Silicone composition completely compatible SiH ⁇ containing crosslinker are used, but this has other disadvantages, such as increased levels of compression set and increased Ausschwitztendenz the ha tverstoffnden component, the result.
• Ingredient greater than 12 mole% also causes a high intrinsic viscosity of the silicone elastomer composition to occur in
• crosslinkers R 3 Si (OSi (R) H) n OSiR 3 , - ⁇ OSi (R) H) n - or R 4 _i Si (OSi (R) 2 H) i with n at least 3 and 1 3 or 4 and a special adhesion promoter included. No copolymers are described explicitly so that H (R) Si0 2/2 - contain and (R) 2 SiQ 2/2 units. At the specified
• Adhesion promoter is a compound which contains at least one aliphatically unsaturated group and at least two phenylene groups.
• the adhesion promoter used is a mixture of cyclic organohydrogensiloxanes and a compound having at least two phenyl units and one alkenyl unit.
• Silicone compounds are added, phenyl or alkoxysilyl groups and these or their hydrolysis products are therefore toxic or hazardous to health. As a result, their use is limited to technical materials. For medical,
• An object of the invention are addition-curing
• Hydrocarbon radical having 2 to 10 carbon atoms, which may contain 0 ⁇ , N, S, or P atoms, and
• R 7 is hydrogen or the meanings of R 8 .
• Hydrocarbon radical having 1 to 20 carbon atoms Hydrocarbon radical having 1 to 20 carbon atoms
• g is a number greater than or equal to 1
• h is 0 or a positive number, preferably 0, 1, 2 and particularly preferably 0,
• R 10 is hydrogen or a linear, branched or
• Y is selected from carbonyl, ethers, esters, carboxylic acids, amides, acid amides, carbamates, ureas, urethanes and alcohols,
• n 0 or a positive number
• p and r are a number 0, 1, 2 or 3 and
• q is a number 0, 1 or 2
• the addition-crosslinking silicone compositions (S) have excellent adhesion to common technical in particular, on bisphenol-based polymers.
• the components (A), (B), (C) and (D) may be a compound or a mixture of various compounds.
• the radicals R 1 are alkyl radicals, such as methyl, ethyl, propyl, isopropyl, tert. Butyl, n-pentyl, iso-pentyl, neo-pentyl, tert.
• Naphthyl radical Aralkyl radicals, such as benzyl, 2-phenylpropyl or phenylethyl radical, and halogenated and organically functionalized derivatives of the above radicals, such as 3,3,3-trifluoropropyl, 3-propylpropyl, 3-isocyanatopropyl,
• radicals R 1 contain 1 to 10, in particular 1 to 6 carbon atoms and optionally halogen substituents. Particularly preferred radicals R 1 are methyl, phenyl and 3,3,3-trifluoropropyl, in particular the methyl radical.
• the radicals R 2 are accessible to a hydrosilylation reaction.
• alkenyl and alkynyl radicals such as vinyl, allyl, isopropenyl, 3-butenyl, 2, pentadienyl, butadienyl, 5-hexenyl, undecenyl, ethynyl, propynyl and hexynyl; Cycloalkenyl radicals, such as cyclopentenyl, cyclohexenyl, 3-cyclohexenylethyl, 5-bicycloheptenyl, norbornenyl, 4-cyclooctenyl or cyclooctadienyl radical; Alkenylaryl, such as styryl or styrylethyl, and halogenated and
• Heteroatom-containing derivatives of the above radicals such as 2-Bromovinyl, 3-bromo-1-propynyl, 1-chloro-2-methylallyl, 2- (chloromethyl) allyl, styryloxy, allyloxypropyl, 1-methoxyvinyl, cyclopentenyloxy, 3-cyclohexenyloxy, Acryloyl, acryloyloxy, methacryloyl or methacryloyloxy.
• Preferred radicals R 2 are vinyl, allyl and 5-hexenyl, in particular the vinyl radical.
• the viscosity determined at 25 ° C. is preferably 10 to 1,000,000 mPa ⁇ s.
• the viscosity ranges are preferred for the diorganopolysiloxanes ⁇ A).
• RTV-2 Room Temperature Vulcanizing
• viscosities are from 100 to 10,000 mPa *, for LSR (Liquid Silicone Rubber) from 1000 to 500,000 mPa * s and for HTV (High Temperature Vulcanizing) from 2000 to 40 000 Pa * s
• Si-bonded hydrogen are hydrocarbon radicals having 1 to 10, in particular 1 to 6 carbon atoms, in particular the alkyl, aryl and alkaryl radicals mentioned for R 1 .
• Preferred radicals R 7 , R 8 and R 9 are Si-bonded hydrogen, methyl, ethyl, propyl, butyl, octyl, cyclohexyl, phenyl and
• radicals R 7, R 8 and R 9 are Si-bound hydrogen, methyl and phenyl radical, where thereof still Si- bonded hydrogen and the methyl group are the most preferred radicals.
• the cyclic organohydrogenpolysiloxanes (B) are preferably copolymers containing H (CH 3) Si0 2/2 and (CH 3) 2 Si0 2/2 units, and homopolymers containing only H (CH 3) Si0 2/2 - Units, as well as mixtures thereof, wherein the homo-oligomers are more preferred.
• Organohydrogenpolysiloxanes ⁇ B are homopolymers such as
• Organohydrogenpolysiloxanes (B) preferably contain
• Organohydrogenpolysiloxane (B) preferably less than 20% by weight, more preferably less than 10 wt .-% makes.
• Organohydrogenpolysiloxane (B) is a compound of
• the cyclic organohydrogenpolysiloxane (B) of the general formula (II) is free of aromatic groups.
• addition-crosslinking silicone composition (S) additionally (E) at least one organohydrogenpolysiloxane of the general formula (IV) 3 c R 4 d R 5 e H f SiO (4-cd 2e " f ) / 2 ⁇ IV), where
• R 3 is a monovalent aliphatic saturated
• Hydrocarbon radical having 1 to 20 carbon atoms
• R 4 (a) a monovalent, unsubstituted or
• halogen-substituted hydrocarbon radical having 6 to 15 carbon atoms, which contains at least one aromatic C 6 ⁇ ring, or
• Carbon atoms can be replaced by 0, N, S or P atoms,
• R 5 is a divalent Si-bonded bivalent, unsubstituted or halogen-substituted hydrocarbon radical having 6 to 20 carbon atoms, in which individual carbon atoms may be replaced by O, N, S or P atoms,
• d and e denote zero or a positive number
• Organohydrogenpolysiloxane (E) per molecule contains on average at least 3 SiH groups, and
• Organohydrogenpolysiloxane (E) is 5 mPa * s to 5,000 mPa * s, and that the organohydrogenpolysiloxane (E) is not a cyclic organohydrogenpolysiloxane of the general formula (SiHR 7 0 ⁇ g ⁇ SiR 8 R 9 0) h .
• R 3 are alkyl radicals as described above for R 1
• Preferred radicals R 3 are hydrocarbon radicals having 1 to 10 carbon atoms. Particularly preferred radical R 3 is the methyl radical. Examples of R 4 are listed above for R 1 . Preferred radicals R 4 are the phenyl radical and the 3, 3, 3-trifluoropropyl radical. Particularly preferred radical R 4 is the phenyl radical.
• Preferred radicals R 5 correspond to the general formula (Z)
• R 6 is a bivalent, unsubstituted or
• halo-substituted hydrocarbon est having 1 to 10 carbon atoms, which is free of aliphatic
• M is a bivalent radical such as -Ph-, Ph-0-Ph, -Ph-S-Ph, -Ph-S0 2 -Ph, -Ph-C ⁇ CH 3 ) 2 -Ph-, -Ph- C (CF 3 ) 2 -Ph-, -Ph-C (O) -Ph-, cyclohexylene or norbornylene, wherein Ph denotes a phenylene group.
• Particularly preferred radical R s is the phenylene radical and the
• organohydrogenpolysiloxanes (E) of the general formula (IV) are linear and branched
• Organohydrogenpolysiloxanes these preferably from
• Organohydrogenpolysiloxane (E) of the general formula (IV) are linear and branched Organohydrogenpoly iloxane particularly preferably composed of units of the formulas (CH 3) 3 Si0 1/2, H (CH 3) Si0 2/2, and (CH 3) 2 Si0 2/2 or consist of mixtures of different such organohydrogenpolysiloxanes.
• the organohydrogenpolysiloxane (E) of the general formula (IV) preferably contains an average of 5 to 40 SiH groups per molecule. On average, 10 to 25 SiH groups per molecule are particularly preferred. In a particularly preferred embodiment, this is
• the viscosity of the component (E) measured at 25 ° C. is preferably 2 to 1000 mPa * s.
• Component (E) have a low content, typically less than 100 ppm by weight, Si-bonded OH groups.
• Organohydrogenpoly iloxane (E) Preferred embodiments of the Organohydrogenpoly iloxane (E) are, for example
• Copolymers containing (Ph) Si0 3/2 , (CH 3 ) 2 Si0 2/2 and H (CH 3 ) Si 2/2 units having (CH 3 ) 3 SiO 2/2 end groups Copolymers containing (Ph) (CH 3) Si0 2/2 ⁇ , (CH 3) 2 Si0 2/2 - ud H (CH 3) Si 2/2 units comprising (CH 3) 3 SIOI / 2 end groups,
• Organohydrogenpolysiloxanes (E) are, for example
• organohydrogenpolysiloxanes (E) are particularly preferred, which consist of -Si (CH 3 ) H ⁇ 0 and -Si (CH 3 ) 2 -O units with a molar ratio of 3: 1 comprising (CH 3 ) 3 Si. 0-end groups, or of -Si ⁇ CH 3 ) H ⁇ 0 and -Si (CH 3 ) -O units with a
• the adhesion promoter (C) of the general formula (III) is a compound having at least two aliphatically unsaturated groups per molecule.
• functional groups Y to include ethers, esters, carboxylic acids, alcohols and amides.
• the alkyl groups R 10 preferably have at most 16,
• Alkenyl groups R 10 preferably have at least 2 and
• alkyl groups R 10 are mentioned above at R 1 .
• alkenyl radicals R 10 are mentioned above at R 2 .
• radicals R 10 are fatty acid or fatty alcohol radicals such as the lauryl, myristyl, cetyl, stearyl, arachinyl, ricinolyl, undecylenyl, palmitoleinyl, oleyl, Eurucayl, linolyl, linolenyl and Arachidonyl residue.
• the index n is preferably zero or a positive number of at most 10, more preferably at most 2, in particular 0 or 1.
• the indices p and r are preferably zero to 2, particularly preferably zero or 1.
• the index q is preferably zero or 1.
• adhesion promoter (C) are esters of ethylene glycol and glycerol with mono-, di- or tri-unsaturated fatty acids having at least 4, in particular at least 6 and at most 30, in particular at most 20 carbon atoms.
• Organohydrogenpolysiloxane (B) is used. Only then is surprisingly observed a very good adhesion to particular bisphenol A ⁇ containing thermoplastics.
• the hydrosilylation catalyst (D) serves as a catalyst for the addition reaction between the aliphatically unsaturated hydrocarbon radicals R 2 of the diorganopolysiloxanes (A) and the unsaturated groups of the adhesion promoter (C) with the Si-bonded hydrogen atoms of the cyclic organohydropolysiloxanes (B) and optionally the hydrosilylation Organohydrogensiloxanes (E).
• R 2 aliphatically unsaturated hydrocarbon radicals R 2 of the diorganopolysiloxanes
• C unsaturated groups of the adhesion promoter
• E hydrosilylation Organohydrogensiloxanes
• Hydrosilylation catalysts are used.
• hydrosilylation catalyst (D) there may be used, for example, metals and their compounds such as platinum, rhodium, palladium, ruthenium and iridium, preferably platinum and rhodium.
• the metals may be added on be finely divided support materials, such as activated carbon, metal oxides, such as alumina or silica, fixed.
• platinum and platinum compounds are used.
• platinum compounds which are soluble in polyorganosiloxanes.
• As soluble are particularly preferred.
• Platinum compounds for example, the platinum-olefin complexes of the formulas (PtCl 2 .Olfin) 2 and H (PtCl 3 , olefin)
• Carbon atoms such as ethylene, propylene, isomers of butene and octene, or cycloalkanes having 5 to 7 carbon atoms, such as cyclopentene, cyclohexene and cyclohepten used.
• Further soluble platinum catalysts are the platinum-cyclopropane complex of the formula (PtCl 2 C 3 H s ) 2 , the
• Methylvinylcyclotetrasiloxane in the presence of sodium bicarbonate in ethanolic solution platinum catalysts with
• Phosphorus, sulfur and amine ligands can be used, eg (Ph 3 P) 2 PtCl 2 .
• Particular preference is given to complexes of platinum with vinylsiloxanes, such as sy-divinyltetramethyldisiloxane.
• hydrosilylation catalyst (D) used depends on the desired crosslinking rate and on economic aspects. Usually, per 100 parts by weight diorganopolysiloxane (A) 1 x 10 "5 to 5 x IQ" 2 wt -.. Parts, preferably 1 x 10 "4 to 1 x 10" 2 and in particular from 5 x 10 "4 to 5 x 10 "3 parts by weight of platinum catalysts, calculated as platinum metal used.
• crosslinked silicone rubber can be achieved, it is preferred to use actively reinforcing fillers (F) as an ingredient in the addition-crosslinking silicone compositions (S).
• active reinforcing fillers (F) are present all precipitated and fumed silicas, and mixtures thereof used.
• the specific surface area of these active reinforcing fillers should be at least 50 m 2 / g or preferably in the range from 100 to 400 m 2 / g as determined by the BET method.
• Silicone rubbers very well known materials.
• the silicic acid fillers mentioned can be hydrophilic
• reinforcing filler (F) is in the range of 0 to 70% by weight, preferably 0 to 50% by weight.
• inhibitors (G) as a further additive
• addition-curing compounds are also well known.
• common inhibitors are acetylenic alcohols, such as 1-ethynyl-1-cyclohexanol, 2-methyl-3-butyn-2-ol and 3, 5-dimethyl-1-hexyn-3-ol, 3-methyl-1-dodecin 3-ol,
• Polymethylvinylcyclosiloxanes such as 1,3,5,7-tetravinyltetramethyltetracyclosiloxane, low molecular weight
• Silicone oils containing (CH 3 ) (CHR CH) Si0 2/2 groups and
• R 2 (CHR-CH) SiO 2 end groups such as divinyltetramethyldisiloxane, tetravinyldimethyldisiloxane, trialkylcyanurates, alkyl maleates, such as
• Alkyl fumarates such as diallyl fumarate and
• organic hydroperoxides such as cumene hydroperoxide, tert. Butyl hydroperoxide and
• inhibitors (H) depends on their chemical structure, so it must be determined individually.
• the content of inhibitors in the silicone compositions (S) is preferably 0 to 50,000 ppm, particularly preferably 20 to 2,000 pptn, in particular 100 to 1,000 ppm.
• the silicone composition (S) may optionally contain as component further additives (H) in an amount of preferably up to 70% by weight, preferably 0.0001 to 40% by weight.
• Additives may be, for example, inactive fillers, quartz, talc, resinous polyorganosiloxanes, dispersing aids,
• Solvents other adhesion promoters, pigments, dyes, plasticizers, organic polymers, heat stabilizers, etc.
• additives such as activated carbon, quartz powder,
• Diatomaceous earth clays, chalk, lithopone, carbon black, graphite,
• constituents (K) which are used in conventional pressure-sensitive addition-crosslinking silicone rubber compositions may be added.
• These are preferably organopolysiloxane compounds.
• silicone composition (S) contains
• Hydrosilylation catalyst (D) and optionally
• At least one inhibitor (G) 0.01 to 0.5 parts by weight of at least one inhibitor (G), in particular 0.01 to 0.2 parts by weight, and
• the ratio of the total amount of Si-H groups to the total amount of Si-vinyl groups may vary in the range of 0.5 to 15, with 1.0 to 7 being preferred, and 1.2 to 4.5 being particularly
• the constituents (F), (G), (H) and (K) may optionally be present in both components (i) and (ii), the presence of the constituent (F) in both components as well as the presence of the constituent (G ) in both or at least in one of components (i) and (ii) is preferred.
• Silicone compositions (S) are made by mixing the above listed components (i) and (ii) in any
• the crosslinking of the silicone compositions (S) is carried out by heating, usually at 40 to 250 ° C, preferably at least 50 ° C, more preferably at least 80 ° C, preferably at most 200 ° C, especially at most 180 ° C.
• the invention also relates to addition-crosslinked
• Silicone elastomers prepared from the silicone compositions (S).
• Another object of the invention is a process for the preparation of addition-crosslinking silicone compositions (S) in which the components (A), (B), (C), (D) and optionally (E) are mixed together.
• the constituents (A), (B), (C), (D) and, if appropriate, (E) are as described above for the two components (i) and (ii) divided up.
• Organohydrogenpolysiloxane (B) a compound of general formula (II), with the proviso that the sum of g and h. a number greater than or equal to 5.
• Organohydrogenpolysiloxane (B) of the general formula (II) free of aromatic groups
• the organohydrogenpolysiloxane (E) contains an average of 5 to 40 SiH groups.
• the silicone compositions (S) additionally contain at least one reinforcing filler (F), at least one inhibitor (G), and optionally further additives (H) and / or (K).
• Silicone compositions (S) the diorganopolysiloxane (A) with at least one filler (F), optionally
• diorganopolysiloxane (A) may be hydrophobed, mixed and this optionally subsequently with further diorganopolysiloxane (A),
• the mixing takes place preferably via discontinuous and / or continuous mixing units, such as kneaders, dissolvers or planetary mixers.
• the invention also provides a composite material in which at least a part of the composite material of a
• At least one substrate material is firmly connected.
• the invention also relates to a method for
• Silicone compositions (S) applied to the substrate and then by heating to 40 to 250 ° C to a
• the silicone compositions (S) By vulcanizing the silicone compositions (S) on a substrate or between at least two substrates, the silicone compositions (S) can be bonded to the substrates by applying the silicone compositions (S) to at least one substrate and then crosslinking them preferably by heating to a composite material.
• the silicone compositions (S) can be used advantageously in particular wherever good adhesion between the addition-crosslinked silicone elastomer and
• At least one substrate preferably consisting of
• thermoplastics containing bisphenol A units for example polycarbonates and polyetherimides
• polyamides and polyesters for example polyamides and polyesters, metals or glasses.
• the substrate may be present as a molded part, film or coating.
• the silicone compositions (S) are suitable for the production of composite material by coating, bonding, casting and for the production of molded articles.
• the silicone compositions (S) are also suitable for casting and bonding electrical and electronic components and for the production of
• Composite moldings is here understood as a uniform molded article made from a composite material which consists of one of the silicone compositions (S).
• Substrate is composed so that the parts is a solid, permanent connection.
• the parts is a solid, permanent connection.
• Organohydrogenpolysiloxane (B) with the SiH-containing crosslinker (E) allows the maintenance of a practical mechanical property profile, wherein the proportion of
• Silicone elastomers with a hardness of more than 60 Shore A are to be obtained. All the above symbols of the above formulas each have their meanings independently of each other. In all
• PC-1 polycarbonate
• Makrolon ® 2405 (Bayer MaterialScience AG)
• PC-2 polycarbonate
• Lexan 141R ® Lexan 141R ® (GE Plastics)
• PC-3 polycarbonate-polyester blend
• Xylex ® X8303CL SABIC Innovative Plastics
• VA steel (industrial grade) (industrial grade)
• Substrate materials for the Pressvulkanisationsvon respectively the thermoplastic granules for the injection molding according to the manufacturer's instructions in a suitable manner
• Silicone elastomers does not distort the results, while a textile tape was inserted into the silicone composition.
• the vulcanization was carried out over a period of 3 minutes at a temperature of 120 ° C and a pressure of 30 to the substrate materials PC ⁇ 1, PC-2 and PC ⁇ 3, in which a complete crosslinking of the liquid silicone composition was carried out.
• the substrate material VA was the
• Liquid silicone elastomer layer inlaid with textile tape was initially stored for at least 16 hours at room temperature after removal from the mold. Then the
• the peel tester is clamped in a tensile tester and determines the maximum release force necessary to remove the adhering silicone elastomer strip.
• the production of a peel test piece by the 2-component injection molding method was carried out by using a prior art rotary disk tool injection molding machine. It was initially a
• Thermoplastic base the silicone composition (S) injected and vulcanized onto the substrate.
• the injection pressure for self-adhesive addition-crosslinking silicone compositions is usually in the range from 200 to 2000 bar, but may in exceptional cases exceed or exceed these values.
• the injection temperature for self-adhesive addition-crosslinking silicone compositions is usually in the range 15 to 50 ° C, and these temperatures may also be below or exceeded in individual cases.
• the peel test specimens prepared by the 2-component injection molding process were also stored at room temperature for at least 16 hours.
• the so-called 90 ° peeling process was carried out in such a way that the substrate and silicone elastomer strips have an angle of 90 ° to one another and the withdrawal speed is preferably 50 mm / min is.
• the determined separation force (TK) was calculated from the quotient of the maximum force N and the width of the
• Test specimen indicated in N / mm.
• compositions of the examples the following basic materials were used, the cyclic ones indicated
• Glycerol tris (undecylenate) (synthesized from glycerol and undecylenic acid).
• HV3 Haf mediator 3 (according to the invention):
• Linseed oil was natural from a conventional
• HV4 Intermediary 4 (according to the invention):
• Adhesive 5 (HV5) (not according to the invention):
• Glycerol tris ⁇ stearate ⁇ (synthesized from glycerol and
• Adhesive 6 (not according to the invention):
• Linolenic acid ethyl ester ⁇ synthesized from ethanol
• Catalyst solution with a Pt content of 1 wt .-% which contains a platinum divinyltetramethyldisiloxane complex in silicone polymer.
• Component A was prepared analogously to Example 1.
• the B component was admixed with 90 g of the starting material with 0.1 g of 1-ethynyl-1-cyclohexanol, 5.5 g of a vinyldimethylsiloxy-terminated polydimethylsiloxane having a viscosity of 20,000 mPa *. s (25 ° C), 1.8 g of a copolymer of
• Molar ratio 1 1 with trimethylsiloxy end groups and a viscosity of 65 mPa * s and a Si-H content of 0.75%, 1 g of a mixture of pentamethylcyclopentasiloxane and
• component A was carried out analogously to Example 1.
• B component were 90 g of base with 0.1 g l ⁇
• Ethinyl-l-cyclohexanol 2.5 g of a vinyldimethylsiloxy-terminated polydimethylsiloxane having a viscosity of 20,000 mPa * s (25 ° C), 5.3 g of a copolymer of
• Dimethylsiloxy, methylhydrogensiloxy and methylphenylsiloxy groups and trimethylsiloxy end groups having a viscosity of 35 mPa * s and a Si-H content of 0.8%, 0.8 g of a mixture from pentamethylcyclopentasiloxane and hexamethylcyclohexasiloxane in the ratio 5: 3, and 1.1 g of HV 3 mixed.
• component A was carried out analogously to Example 1.
• B component 90 g of base material with 0.1 g of 1-ethynyl-1-cyclohexanol, 2.5 g of a vinyldimethylsiloxy-terminated polydimethylsiloxane having a viscosity of 20,000 mPa * s (25 ° C), 5.3 g of a copolymer of
• Component A was prepared analogously to Example 1.
• the B component was admixed with 90 g of the starting material with 0.1 g of 1-ethynyl-1-cyclohexanol, 5.5 g of a vinyldimethylsiloxy-terminated polydimethylsiloxane having a viscosity of 20,000 mPa *. s (25 ° C), 1.8 g of a copolymer of
• Molar ratio 1 1 with trimethylsiloxy end groups and a viscosity of 65 mPa * s and a Si-H content of 0.75%, 1 g of a mixture of pentamethylcyclopentasiloxane and
• component A was carried out analogously to Example 1.
• B component 90 g of base material with 0.1 g of 1-ethynyl-1-cyclohexanol, 2.5 g of a vinyldimethylsiloxy-terminated polydimethylsiloxane having a viscosity of 20,000 mPa * s (25 ° C), 5.3 g of a copolymer of
• component A was carried out analogously to Example 1.
• B component 90 g of base material with 0.1 g of 1-ethynyl-1-cyclohexanol, 6 g of a vinyldimethylsiloxy-terminated polydimethylsiloxane having a viscosity of 20,000 mPa * s ( 25 ° C), 2.7 g of a copolymer of
• Examples I ⁇ 7 were each component A and B in
• Silicone composition in the manner described above vulcanized onto the respective substrate via Pressvulkanisation.
• Silicone compositions from Examples 1-7 are given in Table 1:

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Organic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• General Chemical & Material Sciences (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Adhesives Or Adhesive Processes (AREA)
• Laminated Bodies (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=44510950

Family Applications (1)

Country Status (7)

Families Citing this family (4)

Citations (12)

Family Cites Families (10)

• 2010
  • 2010-08-09 DE DE201010039085 patent/DE102010039085A1/de not_active Withdrawn
• 2011
  • 2011-08-08 WO PCT/EP2011/063607 patent/WO2012019992A1/de active Application Filing
  • 2011-08-08 JP JP2013523584A patent/JP2013533368A/ja active Pending
  • 2011-08-08 KR KR1020137003203A patent/KR101459249B1/ko active IP Right Grant
  • 2011-08-08 EP EP11748610.0A patent/EP2603562B1/de active Active
  • 2011-08-08 CN CN201180039214.4A patent/CN103068926B/zh active Active
  • 2011-08-08 US US13/813,872 patent/US8748553B2/en active Active

Patent Citations (14)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events